Established in 1988, Langfang Dingsheng Mechanical Equipment Co., Ltd, in synchronous development with the world's oil pipeline transportation and under the support of market and cooperative enterprises, has grown into a joint-stock collectivization enterprise, which the headquarter is located in langfang in China. Dingsheng Group has four subsidiaries, they are respectively Langfang Dingsheng ¡­ [more>>]
                                                                  1. No record!
                                                                    2. Partners
                                                                    国内精品九九久久精品一本